Pump.



No. 677,474. RUSSELL Patented July 2, I91".

PUMP.

(Application filed Nov. 16, 1900.) Modem 3 Shasta-Sheet I 3 I IIIIIIJMNEPatentedluly 2, Mil.

Nu. 677,474. r B. RUSSELL.

Y PUMP.

(Application filed Nov. 16, 1900.) (No Modal.) 3 Sheen-Sheet 2.

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UNITED STATES PATENT OFFICE.

BRIDGMAN RUSSELL, OF LONDON, ENGLAND.

PUMP.

SPECIFICATION forming part of Letters Patent No. 677,474, dated July 2,1901.

Application filed November 16, 1900. Serial No. 36,667. (No model.)

To all whom it 771,601; concern:

Be it known that I, BRIDGMAN RUSSELL, a subject of the Queen of GreatBritain, residing at London, England, have invented certain new anduseful Improvements in Pumps, of which the following is a full andcomplete specification, such as will enable those skilled in the art towhich it appertains to make and use the same.

This invention relates to pumps,and the object thereof is to provide animproved doubleacting pump forlifting, forcing,compressing,orexhaustingairorliquids,afurther objectbeing to provide a pump of theclass described which is adapted for use either as a single or multiplepistonpump and which may be operated by hand or power; and with theseand other objects in view the invention consists in a pump constructedas hereinafter described and claimed.

The invention is fully disclosed in the following specification,of whichthe accom pan ying drawings form a part, in which Figure 1 is a frontview; Fig. 2, a central vertical section on the line 2 2 of Fig. 1; Fig.3, an angular section on the line 3 3 of Fig. 1; Figs. 4 and 5, top andbottom plan views, respectively, of an outlet or delivery box whichforms apart of my improved pump; and Figs. 6 and 7 are top and bottomplan views, respectively, of an inlet or suction box which forms a partof the pump.

In the drawings forming part of this specification the separate parts ofmy improvement are designated by the same reference character in each ofthe views, and in the practice of my invention I provide a pumpcasing,comprising front and back members 5 and 6, which may be regarded ordenominated the opposite sides of the pump-casing, and these parts 5 and6 of the pump-casing are bolted together, as shown at 7 in Fig.1.

At the top of the pump-casing formed by the side members 5 and 6 is aflange 8, to which is bolted or otherwise secured the outlet or deliverybox 9, which is provided with a flange 10, which corresponds with theflange 8, and at the bottom of the main casing formed by the sidemembers 5 and 6 is a flange 11, to which is bolted or otherwise securedthe inlet or suction box 12, having a flange 13 similar to the flange11, and the out let or delivery box 9 is provided with aninteriorly-threaded tubular extension 14, while the inlet or suction box12 is provided with a similar interiorly-threaded tubular extension 15.The opposite side members 5 and 6 of the main casing of the pump areprovided at their perimeter with inwardly-directed drum-shaped portions16, which at their inner edges are bent inwardly at right angles, asshown at 17, and then outwardly to form rims 18, which rims togetherform a cylindrical barrel or guide 19 open at both ends,and between theseparate members 18 of the cylindrical barrel or guide 19 is securedatrans verseIand flexible diaphragm 20, composed of leather or any othersuitable flexible material, and which divides the barrel or guide 19into two separate parts,and the separate members 18 of the barrel orguide 19 are beveled at their inner edges, as shown at 21, so that theywill not cut or injure the diaphragm 20 in the operation of the pump.

An operating rod orshaft 22 passes through one side of the pump-casing,the front side thereof, as shown at 23, and secured thereon is adiaphragm-guard 24, consisting of two separate similar members 25, eachof which is shaped like the half of a drum divided transversely of itsaxis and comprising a circular convex or beveled head 26 and a rim 27,and the diaphragm 20 is secured between the separate members of theguard 24, as clearly shown in Fig. 2, and the convex or beveled heads ofthe separate members of the guard 24 are provided with ports or passages28.

In each side of the pump-casing is an annular chamber 29, and centrallyof each side is a recess 30, these recesses being designed to receive onone side the end of the operating rod or shaft 22 and on the other sidethe hub of one member of the guard 24. The annular chambers 29 are incommunication with the outlet or delivery box 9 by means of ports orpassages 31, formed in the drum of the opp0- site sides of the casing,and corresponding ports or passages 32, formed in the base of the outletor delivery box, and these ports or passages are controlled by weightedvalves 33, which open upwardly and outwardly, and the said annularchambers 29 are also in communication with the inlet or suction box 12by means of ports or passages 34:, formed in the drums of the separatesides of the pumpcasing, and corresponding ports or passages 35, formedin the base of the said inlet or suction box, and these ports orpassages are controlled by weighted flexible valves 36, which openinwardly.

The operating rod or shaft 22 may be operated by a hand-lever37 or inany desired manner, and the operation of the pump will be readilyunderstood from the foregoingdescription when taken in connection withthe accompanying drawings and the following statement thereof.

It will be observed that the heads of the separate members of thediaphragm-guard are convex, as hereinbefore stated, on their innersides, and that the diaphragm 20 is compressed between the hubs of theseparate members of the said guard,and the diaphragm is thus free toswing laterally during the operation of the guard.

It will be observed that the diaphragmguard or the separate partsthereof do not fit tightly in the barrel or guide 19, a thin space beingleft around said guard or the separate parts thereof. The stroke of theguard is also comparatively short, the inward movementthereof beinglimited in any desired manner, preferably by an annular shoulder 22 atthe outer end of the piston-shaft, and

the outer movement thereof being limited by one of the hubs of thediaphragm-guard, and by reason of the fact that the guard does not fittightly in the guide or barrel 19 the liquid or other substance is freeto circulate around the separate members of the guard and through theheads thereof, said heads being provided with ports or passages 28 forthis purpose.

As the diaphragm-guard moves forwardly or to, the right the liquid orother substance passes in through the inlet or suction box and into theleft-hand annular chamber 29, from which it is forced into and throughthe outlet or delivery box 9, and at the next movement of the guard, orwhen said guard moves to the left, the liquid or other substance passesinto the right-hand annular chamber 29, from which it is forced into andthrough the outlet or delivery box 9 at the next forward or outwardmovement of the guard.

The object of the ports or passages 28 in the circular heads of theseparate parts of the diaphragm-guard is to provide means whereby an'yliquid which succeeds in entering the space between the separate partsof Q the guard will pass therefrom,thus preventing the bursting orbreaking of the diaphragm.

It will be observed that the diaphragm 20 securelypacks the guard 24 andthe liquid or other substance cannot pass from one side of thepump-casing to the other under any conditions, and by means of myimproved construction the necessity for employing pistonrings and otherpackings is obviated and the friction in the operation of the pump isreduced to a minimum. 4

My improved pump is simple in construction and operation and perfectlyadapted to accomplish the result for which it is intended, and it willbe apparent that changes in and modifications of the constructiondescribed may be made without departing from the spirit of my inventionor sacrificing its advantages.

Having-fully described my invention, What I claim as new, and desire tosecure byLetters Patent, is-

1. A pump comprising a casing having an interior concentric barrel orguide open at both ends and divided vertically between said barrel orguide and the walls of the cas ing, so as to form separate sidecompartments, said side compartments having top and bottom inlet andoutlet openings, a flexible dia phragm secured vertically andtransversely of said barrel or guide, and dividing the same intoseparate parts, an operating-rod passing through one side of the casingand through said. barrel or guide and through said'diaphragm, and adiaphragm-guard consisting of two parts secured to said operating-rod onx the opposite sides of said diaphragm, substantially as shown anddescribed.

2. A pump comprising a casing having an interior concentric barrel orguide open at both ends and divided vertically between said barrel orguide and the walls of the casing, so as to form separate sidecompartments, said separate side compartments having top and bottominlet and outlet openings, a flexible diaphragm secured vertically andtransversely of said barrel or guide, and dividing the same intoseparate parts, an operatingrod passing through one side of the casingand through said barrel or guide and through said diaphragm, and adiaphragm guard consisting of two parts secured to said operatingrod onthe opposite sides of said diaphragm, said parts of said guard beingcylindrical in cross-section and comprising a circular head and a flangeor rim, and the adjacent sides of said heads being beveled or convex,substantially as shown and described.

3. A pump comprising a casing having an interior concentric barrel orguide open at both ends and divided vertically between said barrel orguide and the walls of the easing, so as to form separate sidecompartments, said side compartments having top and bottom inlet andoutlet openings, a flexible diaphragm secured vertically andtransversely of said barrel or guide, and dividing the same intoseparate parts, an operating-rod passing through one side of the casingand through said barrel or guide and through said diaphragm, and adiaphragm-guard consisting of two parts secured to said operating-rod onthe opposite sides of said diaphragm, said parts of said guard beingcylindrical in.cross section and comprising a circular head and a flangeor rim, and the adjacent sides of said its heads being beveled orconvex, and being also perforated, substantially as shown and described.

4. A pump comprising a casing having an interior concentric barrel orguide open at both ends and divided vertically between said barrel orguide and the walls of the easing, so as to form separate sidecompartments, said side compartments having top and bottom inlet andoutlet openings, a flexible diaphragm secured vertically andtransversely of said barrel or guide, and dividing the same intoseparate parts, an operating-rod passing through one side of the casingand through said barrel or guide and through said diaphragm, and adiaphragm-guard consisting of two parts secured to said operating-rod onthe opposite sides of said diaphragm, said parts of said guard beingcylindrical in crosssection and comprising a circular head and a flangeor rim, and the adjacent sides of said heads being beveled or convex,and being also perforated, and said guard being also of slightly-lessdiameter than the barrel or guide, substantially as shown and described.

5. A pump comprising a cylindrical casing having an interior concentricbarrel or guide open at both ends, a diaphragm arranged centrally insaid barrel or guide and dividing the same into separate parts, and anoperating-rod passing through one side of the cas ing and through saiddiaphragm, and provided with a guard composed of two parts, one on eachside of said diaphragm said guard being adapted to move in said barrelor guide, and said casing being provided with inlet and outlet openings,substantially as shown and described.

6. Apump, comprisinga cylindrical casing, having an interior barrel orguide open at both ends and divided by a transverse flexible diaphragm,an operating rod passing through one side of said casing and throughsaid diaphragm and provided with a diaphragm-guard,consisting oftwoparts secured thereto on the opposite sides of the diaphragm andfreely movable in said barrel or guide, said casing being provided atthe opposite sides with inlet and outlet openings respectively,substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 5th day ofNovember, 1900.

BRIDGMAN RUSSELL, lVitnesses:

XVILLIAM SMEATON,

A. V. DICKSON BULGIN;

